Phi1 Pavonis

Phi¹ Pavonis, latinized from φ¹ Pavonis, is a single^[10] star in the southern constellation of Pavo. It has a yellow-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.75.^[2] The star is located at a distance of approximately 92 light years away based on parallax. It is drifting closer to the Sun with a radial velocity of −20 km/s.^[5]

For other stars with this Bayer designation, see φ Pavonis.

φ¹ Pavonis

Location of φ1 Pavonis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Pavo
Right ascension	20h 35m 34.84931s[1]
Declination	−60° 34′ 54.3103″[1]
Apparent magnitude (V)	4.75[2]
Characteristics
Evolutionary stage	main sequence
Spectral type	F0V[3]
U−B color index	+0.04[4]
B−V color index	+0.29[2]
Astrometry
Radial velocity (Rv)	−20.0±4.2[5] km/s
Proper motion (μ)	RA: +70.271[1] mas/yr Dec.: −184.963[1] mas/yr
Parallax (π)	35.3436±0.2300 mas[1]
Distance	92.3 ± 0.6 ly (28.3 ± 0.2 pc)
Absolute magnitude (MV)	2.53[2]
Details
Mass	1.51[6] M☉
Radius	1.83+0.15 −0.09[1] R☉
Luminosity	8.17±0.06[1] L☉
Temperature	7,209+190 −281[1] K
Rotational velocity (v sin i)	150.0[7] km/s
Age	30+230 −10[8] Myr
Other designations
phi1 Pav, CPD−61° 6492, GC 28609, HD 195627, HIP 101612, HR 7848, SAO 254823[9]
Database references
SIMBAD	data

This is an ordinary F-type main-sequence star with a stellar classification of F0V.^[3] It has 1.5^[6] times the mass of the Sun and 1.8^[1] times the Sun's radius. This is a young star, perhaps 30^[8] million years old, and has a high rate of spin with a projected rotational velocity of 150 km/s.^[7] It is radiating 8.2^[1] times the luminosity of the Sun from its photosphere at an effective temperature of 7,209 K.^[1]

Phi¹ Pavonis is a candidate debris disk star, although Gray et al. (2006) reported a non-detection of an infrared excess.^[3] Nilsson et al. (2010) report a marginal detection, orbiting 74 AU from the host star with a temperature of 57 K and an estimated 3.1±1.7 times the mass of the Moon.^[8]